David Hilbert (1862–1943) was widely recognized as the foremost mathematician active in Germany in the first decades of the twentieth century. Hilbert taught mathematics at the University of Königsberg from 1886 until 1895, when he accepted a chair at the University of Göttingen. At the latter institution, Hilbert and his fellow mathematician Felix Klein combined forces to transform Göttingen into the world’s first center for cutting-edge research in pure and applied mathematics (Rowe 2008).
After solving the extant problems of invariant theory as a young man, Hilbert worked on algebraic numbers, and on the foundations of geometry, providing an axiomatization of Euclidean geometry satisfying his requirements of completeness, independence and consistency. The formal approach was influential both in mathematics and in broader circles; Hilbert and his students applied it – with varying degrees of success – to the domains of mechanics, mathematical physics, and to the foundations of mathematics. Hilbert also made fundamental contributions to the theory of integral equations, upon which the concept of a Hilbert space was elaborated, beginning in 1904.
Much of the correspondence between Hilbert and Poincaré concerns the organization of a cycle of lectures delivered by Poincaré in Göttingen from April 22 to 28, 1909, under the auspices of the Wolfskehl Foundation. Hilbert opened the cycle with a short speech, an English translation of which was published by David Rowe (1986). For an overview of Poincaré’s lectures, see Gray (2013, 416), and for a discussion of the third and sixth lectures, on the propagation of Hertzian waves and on the new mechanics, respectively, see Walter (2018).
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- Mathematical Correspondences and Critical Editions. Birkhäuser, Basel. Cited by: S. A. Walter (2018).
- Henri Poincaré: A Scientific Biography. Princeton University Press, Princeton. Cited by: David Hilbert.
- David Hilbert on Poincaré, Klein, and the world of mathematics. Mathematical Intelligencer 8, pp. 75–77. Cited by: David Hilbert.
- Disciplinary cultures of mathematical productivity in Germany. In Publikationsstrategien einer Disziplin: Mathematik in Kaiserreich und Weimarer Republik, V. Remmert and U. Schneider (Eds.), Mainzer Studien zur Buchwissenschaft, Vol. 19, pp. 9–51. Cited by: David Hilbert.
- Poincaré-week in Göttingen, in light of the Hilbert-Poincaré correspondence of 1908–1909. See Mathematical Correspondences and Critical Editions, Borgato et al., pp. 189–202. External Links: Cited by: David Hilbert.